Jerwan

Jerwan is an archaeological site north of Mosul in Iraq's Nineveh Province, famous for the ruins of a massive aqueduct built by Assyrian king Sennacherib between 703 and 690 BC. Constructed from over two million dressed stones with stone arches and waterproof cement, the aqueduct spans roughly 280 metres with an estimated height of 9 metres and width of 22 metres. It was part of a canal system carrying water from Khenis gorge to the gardens and fields of Nineveh, 50 km to the south. Often considered the world's oldest known aqueduct, it predates Roman aqueduct engineering by five centuries.